During the library scene when they are running away from the girl, if you look closely most of the shots with Sam you can see a light colored hand bandage around his left hand from his car accident during filming. See more...
Popular blog posts:
Other great sites
Transformers: Revenge of the Fallen (2009) - 159 mistakes
Continuity: When Devastator is sucking up the vehicles and structures at the construction site, the large camper's exterior is pulled off, leaving only the frame as the camper is pulled forward, but a few shots later, in an overhead wideshot that camper is still intact and straight, as Mudflap and Skids stand firm.
Continuity: In Egypt, when Sam says, "We got cops!" they're at a fork in the road, and with two police cars heading towards them from the left of the 'fork', Sam drives to the right of the 'fork'. However, in the next shot, the two police cars are driving past Bumblebee and the twins on the very same road, just before the police cars make their U-turns.
Continuity: At NEST headquarters in Diego Garcia, when Optimus points his finger at Galloway and says, "We've witnessed your human capacity for war," both of Lennox's arms are up and crossed in front of him, then they're down and clasped behind him, and then back to crossed in front of him, between shots.
Continuity: When Sam, Mikaela and Leo arrive at Simmons's deli, in the exterior shot the deli has a single front door with its glass covered, and bars on the store's windows. However, when Sam walks in and when Simmons tries to walk away from Sam, we see there are double front doors with a meat poster on one, and there are no bars outside of the store's window.
Revealing: When Sam is standing on the stairs with his hands up, just before Megatron grabs him and throws him onto the table for the 'Doctor', the rail and balusters in front of Sam have been set up to easily break for the stunt - note the short diagonal bits of wood propped up between them, precisely where they break for the grab.
Continuity: At the frat party, when Sam uses the cake frosting to write the symbols, in the first shot he writes the first symbol with perpendicular lines aligned with the cake's edge. In a following shot showing more frosting symbols, the original two lines have changed shape and position - none of the symbols are aligned with the cake's edge.